Banca de QUALIFICAÇÃO: LUÃ SILVA CARDOSO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : LUÃ SILVA CARDOSO
DATA : 06/12/2018
HORA: 11:00
LOCAL: Auditório - ECT
TÍTULO:

Virtual Impedance Concept to Decouple P/Q of Distributed Generation Systems. 

PALAVRAS-CHAVES:

Distributed Generation, Power Flow Control, Grid Forming, Virtual Impedance.

PÁGINAS: 65
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Eletrônica Industrial, Sistemas e Controles Eletrônicos
ESPECIALIDADE: Eletrônica Industrial
RESUMO:

The use of distributed generation systems, which use renewable sources of electricity, has become increasingly common because of advances in power electronics and environmental problems. In Brazil the energy capacity of distributed generation is constantly increasing. Considering the new model of the electric power system, with the participation of distributed generation systems, the use of methods that regulate the flow of power in the generation units can contribute directly to the stability of the electric system, especially in low voltage networks, because they have a resistive characteristic and the active power supply can cause overvoltages. In addition, power flow strategies used in conventional generation systems cannot be used in distributed generation systems because of the coupling between active and reactive power. In this way the accomplishment of this work has the objective to realize the adequate control of the power flow, in a system of distributed generation photovoltaic that works in the grid forming, using the concept of virtual impedance. To overcome the problem of the coupling between the active and reactive powers, the system implemented in this work uses a virtual resistor. For the purpose of analysis, the virtual resistor is implemented in two ways. In the first mode a positive virtual resistor is implemented to accentuate the resistive characteristic of the system, reducing the coupling and performing the P/V and Q/θ control. In the second mode, a negative virtual resistor is implemented in order to make the network characteristic predominantly inductive and perform the traditional P/θ and Q/V control. The technique used is evaluated through simulation results and preliminary experimental results.

MEMBROS DA BANCA:
Presidente - 1196444 - RICARDO LUCIO DE ARAUJO RIBEIRO
Interno - 1451883 - FABIO MENEGHETTI UGULINO DE ARAUJO
Externo ao Programa - 1168362 - THIAGO DE OLIVEIRA ALVES ROCHA
Externo à Instituição - CECÍLIO MARTINS DE SOUSA NETO - UFERSA
Externo à Instituição - JOSE RENES PINHEIRO - UFSM